Forward-link analysis of cellular DS-CDMA over generalised fading channels using saddlepoint integration

Author

Oh, S.W. ; Li, K.H.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

Volume

146

Issue

2

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

138

Lastpage

143

Abstract

The bit-error rate (BER) analysis of an asynchronous cellular direct-sequence code-division multiple-access (DS-CDMA) system with channel fading and random mobile locations often results in a multiintegral expression, even though the Gaussian approximation is applied. In the paper, saddlepoint integration (SPI) is proposed to simplify the analysis. The computational complexity grows only linearly with the number of interfering cells in the system, regardless of the number of mobiles in each cell. By making use of the derived expression, the BER performance for arbitrary Nakagami (1960) parameters and path-loss exponents is evaluated efficiently. Simulation results show that the SPI technique is accurate and reliable

Keywords

cellular radio; code division multiple access; computational complexity; error statistics; fading channels; integration; multiuser channels; radio links; radiofrequency interference; spread spectrum communication; BER performance; Gaussian approximation; Nakagami parameters; asynchronous DS-CDMA system; bit-error rate; cellular DS-CDMA; computational complexity; direct-sequence code-division multiple-access; forward-link analysis; generalised fading channels; interfering cells; path-loss exponents; random mobile locations; saddlepoint integration; simulation results;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:19990131

Filename

771473